Portable derrick



Sept. 15, 11942.

H. J. vo ROSENBERG PORTABLE DERRICK Filed May 5, 1941 R s Shee ts-S heet 1 5. r k n M R w J H Sept. 15, 1942.

H. J. VON ROSENBERG PORTABLE DERRICK Filed May 5, 1941 3 Sheets-Sheet 2 .zikoaeniery 2 Q wu m p 15, 1942. H. J. VON RQSENBERG 2,296,186

PORTABLE DERRICK 3 Sheets-Sheet 3 Filed May 5, 1941 4 ll .34 W

Ht/J vfl Raaniary Patented Sept. 15, 1942 O FCE 2,296,186 PORTABLE DERRICK Herbert. J. V031 Rosenberg, Sa'n Antonio, Tex. Application May 5, 1941, Serial No. 3915973 cl Claims; (01. Zia-142) This invention relates to portable derrick-s;

An object ofthis invention-- is to provide a manually operable derrick" forliftijn-g or raisingthe desired articles ormaterial, which isso con,- structed that the-derrick structure may be rocked ortilted'on the Wheels thereof to thereby' assist in elevating the articles. 1

Another object of this invention 'is to provide a portable derrickof thisk-ind which is mounted on a pair ofwheels, the axles of which may be swung withiira radius of ninety degrees so that the wheels inone position thereof will prevent lengthwise shifting of the derrick structure.

A further object of this invention is to provide a derrick structure of, this kind which is formed with an'extensible base so that sufficient leverage may be provided in order to permit the ready shifting of" the loaded derrick.

A further object of this invention is to provide" a portable derrickiincluding. a pivoted boom and a pair of winches for raising or lowering the boom and raising or. lowering articles relative to the boom.

A further object" of this invention. is to provide a portable derrick which may have the frame thereof made out of tubular material welded or otherwise fastened together so as to provide a relatively light weight and strong frame. a

A further object of this invention is to provide a portable derrick which may be manua-lly moved to a position straddling an opening or the like and which may be used with or without a boom to raise or lower articles or material and subsequently shift the articles or material to the desired location, or to initially shift the articles or material to the opening.

To the foregoing objects and to others, which may hereinafter appear, the invention consists of the novel construction, combination and arrangement of parts as will be more specifically referred to and illustrated in the accompanying drawings, wherein is shown an embodiment of the invention, but it is to be understood that changes, variations and modifications may be resorted to which fall within the scope of the invention as claimed.

In the drawings:

Figure 1 is a detail side elevation of a portable derrick constructed according to an embodiment of this invention,

Figure 2 is a top plan of the derrick structure showing in dot and dash line the adjustable handle or frame-structure,

Figure 3 is a sectional view taken on the line 3-3- of Figure 1, i

Figure 4 is a sectional-view taken on the line t-4 of Figure 2; v Figure 5' is a sectional view taken on the line 5-5 of Figure 4!,

Figure 6 is a sectional view takenon the line 6-6 of Figure '2,

Figure 7 isa bottom plan of the frame structure with the axles, boom and winch structure removed, and

Figure 8 is a sectional view taken on the line 88 of Figure 7.

Referring to the diawing's, the numeral Ii) designates generally a frame structure includ ing; a lower horizon-ta U-shaped frame II and avertically disposed? frame structure l-2-. The lower frame structure ll comprises a pair of parallel side members-l 3 and M, which are connected togetherat one end thereof by aconnecting member l-5 and-arcuate members I6, In practice; the side members I3 and I4 and the end member 15- with the arcuate members It are formed from a singletubular member, which is bent in- U shape. The vertical frame I! includes apair of vertically disposed tubular side members I? and I8, which are connected together at their upper ends by aconnecting member I9 having the opposite ends thereof downwardly bent; as at 20; Inpractice, the side members I! and I8 with theconnecting members 19 and 26 are formed as a single tubular member bent in U shape.

The lower end portions of the vertical frame members I1 and I8 are Welded; as at 21 and 2'2, to, the horizontal'side members i3 and I4 respectively at a point slightly'rearwardly from the forward: ends" of thehorizontal lower side members" Hi and M: Apair of upwardly convergent bracing members- 23 are secured as at 24 to the lower side members i3 and M adjacent the rear endsof these side members and the upper ends of the bracing members 23 are secured, as by welding 25- or the like, to the bight or connecting member l9 at a'point inwardly from the opposite ends of the upper member IS;

A combined handle or leverage structure and lower frame extension generally designated as 26, is adjustably carried by the lower frame structure II. The extensible frame structure 26 includes a pair of siderails, or bars 21 and 28, which are connected together at one end thereof by a connecting member 29. The side members Hand 28 and the end member 29 are formed as an integral tubular member. The side members 21 and 28 are spaced apart substantially equal in distance to the spacing of the side members I3 and I4 so that the side members 21 and 28 may overlie the upper sides of the side frame members I3 and I4. The side frame member I3 is provided with a pair of U-shaped clamping members 30, which are spaced apart along the length of the side member I3 and which have the bight thereof welded or otherwise fixedly secured to the side frame member I3. The parallel legs of the clamp 30 extend above the side frame member I3 and a clamping bolt is extended through the parallel legs of the U clamp and engages over the top of the side extensible frame 21.

The side frame member I4 is provided with a pair of longitudinally spaced apart U-shaped clamping members 32, which are similar in construction to the clamping members 30 and are welded or otherwise fixedly secured to the side frame member I4. A clamp tightening bolt 33 is carried by each of the clamping members 32 and engages over the top of the extensible frame member 28, so that tightening of the bolt 33 will tighten the parallel clamping legs of the clamp 33 and hold the side member 28 in longitudinally adjusted position with respect to the side member I3.

In order to provide a means whereby the frame structure In may be readily shifted over the ground or other plane surface, I have provided a pair of wheels 34, which are rotatably mounted on spindles or axles 35. The spindles 35 are each provided with a vertically disposed and right angular extension 36 and the extensions 36 are rotatable within the lower portions of the vertical side members I1 and I8. A collar 31 is fixed to each extension 36 adjacent the lower portion thereof against which the lower end of a side vertical frame member is adapted to engage. The'collar 31 provides a means for limiting the upward extension of a spindle extension member 36 within the lower end of a side vertical frame member. The spindle 35 at a point inwardly from the outer end thereof may have fixed thereto a collar 38 against which the hub 39 of the wheel 34 is adapted to abut and an outer collar or washer 40 may engage against the outer end of the hub 39 and a cotter pin 4I extended through an opening 42 formed in the spindle 35 adjacent the outer end thereof. In this manner the wheel 34 is held against endwise movement, but is permitted free rotary movement on the spindle 35.

In the normal use of the frame structure III the spindles 35 will be disposed at right angles to the side frame members I3 and I4. A spindle locking pin 43 is adapted to be extended through a pair of diametrically opposed openings 44, which are formed in the lower end portions of the side frame members I1 and I8 and also through an opening 45 formed in the spindleextension 35. The side frame members I1 and I8 are also provided with a second pair of opposed openings 46, which are at right angles to the openings 44, so that if desired the spindles 35 may be swung to the dotted line positions shown in Figure 2 with the wheels 34 in alignment and at right angles to the side members I3 and I4. With the wheels 34 in the right angular positions shown in Figure 2, the frame structure I5 is prevented from longitudinal movement but may be tilted or rocked with the wheels 34 acting as fulcrums. The turning of the wheels to an aligned position also permits the lateral shifting of the frame to permit proper positioning of the boom.

A boom structure generally designated as 41 is pivotally carried by the frame structure I!) and includes a pair of rearwardly divergent tubular frame members 48 and 49, which are formed with parallel rear end portions 59 and BI respectively. The rear end portions 50 and 5I are secured to bearing sleeves 52 and 53 respectively, and the sleeves 52 and 53 are rockably mounted on a horizontally disposed connecting bar 54 extending between the vertical side members I1 and I8. The opposite ends of the connecting bar 54 have fixedly secured thereto sleeves 55 and 56, which are vertically adjustable on the side members I1 and I8 respectively. The side member I1 is provided with a plurality of vertically spaced apart openings 51, and a locking pin 58 is extended through the sleeve 55 and a selected pair of openings 51 so as to adjustably hold the sleeve 55 along the length of the side member I1. The side member I8 is provided with a plurality of vertically spaced apart openings 59 and a locking pin 69 is extended through the sleeve 56 and a selected pair of openings 59 so as to hold the sleeve 56 in vertically adjusted position.

The boom 41 also includes a centrally disposed tubular member BI, which is secured to the forward or convergent ends of the side members 48 and 49 as by welding or the like and preferably the tubular member 6| is secured as shown in Figure 2, to the side members 48 and 49 at a point rearwardly of the forward end of the tubular member 6| so that a substantial portion of this member GI will be extended between and rearwardly from the convergent ends of the side members 48 and 49. The rear end of the tubular member BI is welded to a transverse tubular member 52, which is welded or otherwise secured at the opposite ends thereof to the side members 48 and 49.

A boom extension 63 is engageable within the tubular member BI and is adapted to extend forwardly of the forward end of the tubular member 6|, \as shown in Figure 2. A U-shaped clevis 64 is fixedly secured, as at 65, to the forward end of the extension 63 and a pulley or sheave 66 is rotatably mounted between the side arms of the clevis 64. An article or material elevating member 61 in the form of a rope or other flexible member is trained about the pulley or sheave 66 and is also trained through a sheave 68 which is swingably carried by an eye 69 mounted on the connecting member I9. A winch structure 19 is fixed to the vertical side rail I1 at a point upwardly from the lower end thereof, as by welding or the like, and the flexible elevating member 61 is wound about the drum 1| forming part of the winch structure. This winch structure may be of conventional construction and is here shown as a U-shaped frame 12 which may be welded or otherwise fixed to the inner side of the side members I1 and a crank 13 is connected with the drum H for manually turning the drum H to wind the flexible member 68 thereabout. It will, of course, be understood that if desired a power operated winch structure may be used in place of the manually operable winch structure 10.

In order to provide a means whereby the boom 51 may be manually elevated or lowered I have provided a boom operating winch structure generally designated as 14. The winch structure 14 is fixed as by fastening devices 15 to a horizontally disposed plate 16, which is welded: or other.-. wise fixed between the. inclined" bracing members 23 at; a point intermediate the. upper and? lower ends of the. bracing members 23-; A boom 81B:- vating flexible member 1&1 is wound about the drum 1&1 of." the winch structure 1:4. and is also trained through a swingable sheave. 1.51 carried by aneye, 80. 'Iihe. eye 8% is mounted. on the horizontal connecting member [.91 at one side of theieye. 69; The boom elevating. member 11 has one end thereof connected with an. eyev 81, which is fixedto the tubular member B l: ad-. jacent the forward end thereof.

In theuse; andioperation of this derrick structurethe-desiredmaterial or articles may be connectedewithlthe-flexible member 6:1 and thelboom 41 raised: by means of: the flexible member. 11 to-- the desired position in order to. elevate the article-or material above the. ground! to the desired: point. The derrick structure may then be shifted to the desired: location and where thearticle beingshiftedis.relatively heavy the lower frame extension 26 may-beadjusted: lengthwise to thedesired degree by means of the clamping members 30 and= 3 2 to give the desired leverage to the lower framestructure of: which. the extension 26 forms apart. After the derrick structure has been shifted to the desired location the material raising and loweringhwinch structure 10 may be operated to lower the articles or material to the desired point. During the lowering operation, if desired, the entire derrick structure may be tilted so as to lower the forward end of the boom 41.

In the event the articles which are being raised by means of the boom structure 4'! are such as might shift the frame structure It rearwardly by rotation of the wheels 34, these wheels may be initially swung to an aligned position which is the position shown in dotted lines in Figure 2. During the initial raising of an article or material, the boom structure may, if desired, be lowered to the extent desired which may be at a downward and forward inclination and the two frame members II and 26 may then be at an upward inclination. After the article or materials have been attached to the elevating cable 61, the entire derrick structure may be tilted by lowering the two frame members II and 26. Where this tilting movement will not raise the articles or material to the desired degree the winch structure 70 may be operated to raise the articles or material relative to the boom and subsequently the boom elevating and lowering winch 14 may be operated to elevate theforward end of the boom 41.

This derrick structure is adapted to be constructed primarily out of tubular material, which is welded together so as to form a substantially light frame structure which can be readily shifted or moved from one point to another. The wheels 34 are spaced apart a sufiicient distance so that in most instances these wheels can be disposed on opposite sides of a ditch or other opening. In the event the material which is being elevated is of such a weight that it might raise the rear end of the lower frame structure including the frame members II and 26, a weight or the like may be placed on the lower end of this horizontal frame structure and after the article or material has been raised to the desired degree the Weight may be removed and the derrick structure shifted to the desired point with the material in an elevated position.

The derrick herein disclosed may also be with the frame; l2 in. an initially horizontal position and the frame H1 in. a verticalf position, so. that when theload is. applied tov the: boom. the entire structure may be: tilted: to; raise the frame. l2 and: lift the article without operation of" the boom. Eurthermore, if desired abalancing. load may-be mounted on the frame I I. or. the extension 26 tormaintain. the loadin a substantially bal-. anced position. as it is moved to the desired point. In certain instances also. it maybe. de s'irable to remove the extension 261- and also the-boomv4'l.

What I claimis:

l. A portable derrick comprisinga frame including right. angularly disposed vertical and horizontal U-shaped frame members having the ends of the parallel legsthereof'fixed together, a pair on bracing membersfixed to said; frame members, aipairl of wheels, arightangle spindle for each Wheel having one side 2 thereof telescop ing into the lowerends of said vertical frame members, and meanslengageable withsaid verti-. cal-frame members andisaid one side of a spindle for locking said-spindles to. thereby dispose said wheels inleither parallelzrelation or in align ment, said:frame,b eing.i rockable about the axes of. said wheels: when the; latter are in. parallel relation.

2. A. portablederrick comprising a, frame including right angularly disposed vertical and horizontal U-shaped frame members having the ends of the parallel legs thereof fixed together, a pair of bracing members fixed to said frame members, a U-shaped extensible frame member having the parallel legs thereof overlying the parallel legs of said horizontal frame, clamping members carried by said horizontal frame for holding said extensible frame in adjusted position, a pair of wheels, a right angle spindle for each wheel having one side thereof telescoping into the lower ends of said vertical frame members, and means engageable with said vertical frame members and said one side of a spindle for locking said spindles to thereby dispose said wheels in either parallel relation or in alignment, the axes of said Wheels when the latter are in parallel relation constituting the fulcrum about which said frame is rockable, and the contacting portions of said wheels with a plane surface when the wheels are in alignment constituting the fulcrum about which said frame is also rockable.

3. A portable derrick comprising a frame including right angularly disposed vertical and horizontal U-shaped frame members havin the ends of the parallel legs thereof fixed together, a pair of bracing members fixed to said frame members, a pair of wheels, a right angle spindle for each Wheel having one side thereof telescoping into the lower ends of said vertical frame members, means engageable with said vertical frame members and said one sideof a spindle for locking said spindles to thereby dispose said wheels in either parallel relation or in alignment, a boom for said frame, and means extending between the parallel legs of said vertical frame member for pivotally mounting said boom on said vertical frame member, said latter means also constituting a brace for holding the legs of said vertical frame member against spreading.

4. A portable derrick comprising a frame including right angularly disposed vertical and horizontal U-shaped frame members having the ends of the parallel legs thereof fixed together, a pair of bracing members fixed to said frame members, a pair of wheels, a right angle spindle for each wheel having one side thereof telescoping into the lower ends of said vertical frame member, means engageable with said vertical frame members and said one side of a spindle for locking said spindles to thereby dispose said wheels in either parallel relation or in alignment, a boom for said frame, a horizontally disposed pivot member for said boom, right angularly disposed sleeves carried by said pivot member loosely engaging the legs of said vertical frame member, and means holding said sleeves in vertically adjusted position, said pivot member also constituting means for holding the legs of said vertical frame member against spread- 5. A portable derrick comprising a frame including a pair of right angularly disposed U- shaped frame members, a pair of wheels rotatably carried by said members, a boom, means pivotally mounting said boom on one of said frame members, said boom including a pair of outwardly convergent tubular members, a tubular socket fixed between the convergent ends of said tubular members and having an open outer end, an extension member engaging in said socket, a sheave carried by said extension member, said pivotal mounting means including a horizontal bar, a sleeve at each end of said bar slidable on said One frame member, and means locking said sleeves in vertically adjusted position, said bar and said sleeves also holding said one frame member against spreading.

6. A portable derrick comprising a frame including a pair of right angularly disposed U- shaped frame members, a pair of wheels rotatably carried by said members, a boom, means pivotally mounting said boom on one of said frame members, said boom including a pair of outwardly convergent tubular members, a tubular socket fixed between the convergent ends of said tubular members and having an open outer end, an extension member engaging in said socket, a sheave carried by said extension member, said pivotal mounting means including a horizontal bar, a sleeve at each end of said bar slidable on said one frame member, means locking said sleeves in vertically adjusted position, said bar and said sleeves also holding said one frame member against spreading, a pair of winches carried by said frame, a flexible member wound about one winch and connected with said boom for elevating or lowering the latter, and a flexible member wound about the other winch and trained through said sheave for elevating or lowering an article relative to said boom.

HERBERT J. VON ROSENBERG. 

